ZC7-13632-17715 · OpenVSafe

Timeline

Registration Vaccinations Survey responses Call reports Cases without a report Call attempts Call successful Pregnancy survey

2021-02-21
Dose 1 — Moderna
2021-03-21
Dose 2 — Moderna
2021-03-24
Registered in v-safe
2021-03-24
Survey response — days 1–6 daily, dose 2
MedDRA: Pre-existing disease — Feeling: Fair · Headache

Free text: I have chronic migraines and I believe my headache may be related to that and not necessarily the vaccine as I am due for my treatment soon!

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-25
Survey response — days 1–6 daily, dose 2
MedDRA: Pre-existing disease — Feeling: Fair · Headache · Be unable to work

Free text: I have chronic migraines and have a migraine today that I do not believe is related to the vaccine

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-03-26
Health check-in — days 1–6 daily, dose 2
Feeling: Good · None

Adult check-in
2021-03-28
Health check-in — day 7, dose 2
Feeling: Good · Fatigue or tiredness

Adult check-in
2021-04-21
Survey response — day 28, dose 2
MedDRA: Menstruation delayed — Feeling: Good

Free text: Delayed (2 weeks) menstrual period for April. Typically my period comes at the exact same time of the month, or does not come as I have an IUD. The only possible change I can think of was the vaccine in the last week of March.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-04-27
Survey response — day 35, dose 2
MedDRA: Heavy menstrual bleeding, Menstruation delayed — Feeling: Good

Free text: Not sure if related to the vaccine, but as reported last week my menstrual period was very delayed and has been much heavier than usual.

MedDRA releases: 2021-09,2023-04,2024-11 · check-in free text available
2021-05-02
Health check-in — day 42, dose 2
Feeling: Good

Adult check-in

Vaccinations

Dose	Date	Manufacturer	Co-administered
1	2021-02-21	Moderna
2	2021-03-21	Moderna

Free text

Release 6 — days 1–6 daily, dose 2

2021-03-24

Systemic reaction (other): I have chronic migraines and I believe my headache may be related to that and not necessarily the vaccine as I am due for my treatment soon!

2021-03-25

Systemic reaction (other): I have chronic migraines and have a migraine today that I do not believe is related to the vaccine

Release 7 — day 28, dose 2

2021-04-21

Symptoms: Delayed (2 weeks) menstrual period for April. Typically my period comes at the exact same time of the month, or does not come as I have an IUD. The only possible change I can think of was the vaccine in the last week of March.

Release 8 — day 35, dose 2

2021-04-27

Symptoms: Not sure if related to the vaccine, but as reported last week my menstrual period was very delayed and has been much heavier than usual.

Each entry is dated by the survey it was written in (the CDC re-sent the releases with survey dates in 2025); click a date to see that survey response. The CDC cut some text off at about 250 characters: symptoms in every release, and the other two fields in releases 9-12. Those entries are marked "cut off by CDC".

MedDRA terms by release

Field	Preferred term	2021-09	2023-04	2024-11
SD	Heavy menstrual bleeding	✓	✓	✓
SD	Menstruation delayed	✓	✓	✓
SRO	Pre-existing disease	✓	✓	✓

✓ active code · ○ coded but marked inactive · blank = not in that release